FDTD Dispersive Modeling of Human Tissues Based on Quadratic Complex Rational Function

We propose a dispersive finite-difference time domain (FDTD) suitable for the electromagnetic analysis of human tissues. The dispersion relation of biological tissues is characterized by a quadratic complex rational function (QCRF) that leads to an accurate FDTD algorithm in 400 MHz-3 GHz. QCRF coef...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2013-02, Vol.61 (2), p.996-999
Main Authors: HA, Sang-Gyu, CHO, Jeahoon, CHOI, Jaehoon, KIM, Hyeongdong, JUNG, Kyung-Young
Format: Article
Language:English
Subjects:
Applied classical electromagnetism
Biological system modeling
Biological tissues
curve fitting
Dispersion
dispersive media
Electromagnetic wave propagation, radiowave propagation
Electromagnetism
electron and ion optics
Exact sciences and technology
FDTD methods
Finite difference methods
Fundamental areas of phenomenology (including applications)
Humans
Numerical stability
Physics
Stability analysis
Time domain analysis
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Summary:We propose a dispersive finite-difference time domain (FDTD) suitable for the electromagnetic analysis of human tissues. The dispersion relation of biological tissues is characterized by a quadratic complex rational function (QCRF) that leads to an accurate FDTD algorithm in 400 MHz-3 GHz. QCRF coefficients are extracted by applying the complex-curve fitting technique, without initial guess. Numerical examples are used to illustrate the computational accuracy and stability of QCRF-based FDTD.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2223448